body {
  font-family: Arial, sans-serif;
  margin: 20px;
}

input, select, button {
  margin: 5px 0;
  padding: 5px;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 20px;
}

table, th, td {
  border: 1px solid #ddd;
}

th, td {
  padding: 8px;
  text-align: left;
}

th {
  background-color: #f2f2f2;
}

.ok {
  background-color: #c8f7c5;
  color: #155724;
}

.nok {
  background-color: #f7c5c5;
  color: #721c24;
}

.na {
  background-color: #ffe6a1;
  color: #8a6d3b;
}

#log {
  margin-top: 20px;
  background-color: #f4f4f4;
  padding: 10px;
  height: 150px;
  overflow-y: auto;
}